Here's why:
* Order: Kangaroos belong to the order Diprotodontia, while rabbits belong to the order Lagomorpha.
* Evolutionary History: Kangaroos and rabbits evolved along very different branches of the mammalian evolutionary tree.
* Physical Characteristics: Kangaroos and rabbits have distinct physical features. Kangaroos are marsupials, meaning they have a pouch where they raise their young. Rabbits are placental mammals, meaning their young develop in a placenta inside the mother's body.
* Geographic Distribution: Kangaroos are native to Australia and New Guinea, while rabbits originated in Europe and Asia.
While they are both herbivores and have long hind legs, those similarities are due to convergent evolution, where unrelated species develop similar traits due to adapting to similar environments.